Psalms 40:3

And he hath put a new song in my mouth, [even] praise unto our God: many shall see [it], and fear, and shall trust in the LORD.

Ver. 3. And he hath put a new song in my mouth] i.e. New matter, which I shall soon contrive into a new song, by the help of his Holy Spirit; for I cannot breathe out a desire after him except he first give me breath therewith, and so put a new song in my mouth.

Even praise unto our God] i.e. Unto Christ, saith Junius, to whom and of whom the Church singeth, saith he, in the following verses.

Many shall see it, and fear, and trust in the Lord] Their eye shall affect their heart, both with fear of and faith in the Lord, that bringeth greatest things to pass, and is fearful in praises, doing wonders, Exodus 15:11 .